Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Washability"”.
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The potential of QEMSCAN in predicting coal washability of Mpumalanga coals
… sink analyses are undertaken to determine the washability of coal. Float and sink analyses are costly, require toxic heavy organic liquids and the procedure to wash and dry the float and discard fractions is lengthy. QEMSCAN has the ability to characterise particle density based on the …
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Characterizing Trace Element Associations in the Pittsburgh No. 8, Illinois No. 6 and Coalburg Coal Seams
… data regarding the mineralogical association and washability of trace elements in run-of-mine coals. Therefore, the first step in removing the trace elements through coal preparation is to characterize the modes of association for trace elements in a coal seam. The purpose of this project was to …
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Bacterial and chemical depression of pyrite in froth flotation of coal
… of pyrite in the coal matrix was observed. Washability studies of Illinois No. 6, Pittsburgh, and Middle Kittanning coal seam samples were performed. The washability curves of these coals are presented.
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Flexible-stretchable woven electronic textile system : a tailored multi-modal bodysuit for spatiotemporal physiological and physical activity monitoring
… the robustness of sensor-interconnects system, washability, breathability, and sensor-to-skin contact pressure define the critical features of this novel electronic textile platform. The realization of a tailored, intelligent bodysuit that simultaneously and wirelessly monitors multi-nodal …
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A modern mining operation for the Virginia semianthracite coal field
… the seam in place, chemical characteristics and washability are all included. After the amount and type of impurities present in the deposit are ascertained, a coal preparation plant is proposed to clean the coal to the desired level. Leaving the surface problems, the underground problems of …
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Development of a fine coal beneficiation circuit for the Twistdraai Colliery
… angle measurements, petrographic analysis and washability measurements in orde:r to determine the oil wettability of the coal fractions prior to flotation testing. The results described and discussed in this thesis show that it was possible to recover the desired quality of product by employing …
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DEVELOPMENT OF AN AUTOMATION AND CONTROL SYSTEM FOR A COAL SPIRAL
… changing factors like feed solid content, feed washability characteristics, and feed slurry ionic concentration. With a full-scale compound spiral programmed to achieve a specific gravity of separation at 1.65 by an automatic adjustment of the splitter position, the actual D50 values achieved …
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Precombustion Removal of Hazardous Air Pollutant Precursors
… general partition functions to trace element washability and bench-scale processing data. Simulation studies included comparing three physical coal cleaning techniques. The results of these analyses showed that although no net improvement in trace element rejection can be gained through …
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Charge transport mechanism within 2D material films and its role on field effect transistor and capacitor technology
… with the C C0 only changing by 0.5%. Moreover, washability tests were also preformed on the textile capacitor. The results of the washability test exhibited a 5% decrease in capacitance after 10 wash cycles, which increased to 15% after 25 wash cycles. This thesis also discusses the fabrication …
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Development of the core technology for the creation of electronically-active, smart yarn
… encapsulation of the interconnections to improve washability and provide extra mechanical strength to the core filaments prior to making the final yarn. The final step was the process of manufacturing yarns using the knit braiding technique. A number of prototypes of e-textiles were produced …